Interesting remarks, jehst.
Re No. 1, my guess is that most/all .govs will go ahead and try to seize what they can that is EASY for them. True, it would be very hard to seize foreign dollars. Raise taxes, yes. But many taxes can be avoided by not making (much) income, not owning too much real estate, etc. Seizing gold, naah. They might try to TAX gold sales and purchases though.
Re No. 2, another guess is that with monetary velocity near zero now that printing money may not stop DEFLATION. They would have to print a WHOLE LOTTA MONEY (QEQE... I do not see political (nor bankster) will to do that in the short-term. Longer-term, printing money becomes more likely.
Spending tons of money is easy. The government can just hire my ex-wife. She will design The Second New Deal. Announce universal healthcare and double social security. All paid for by your neighborhood dollar hoarder. They can literally get into a helicopter and throw money down on people.
I think the real problem is when everyone (all at once) loses faith in the USD in addition to abandoned UST and abandoned US stocks. That's when the government will truly be at a loss. There's only so long that the government will be able to pay its thugs and tax collectors when they have totally lost control of money.